Product Info
Table Of Contents
- About the Document
- Contents
- Table Index
- Figure Index
- 1Introduction
- 2Product Concept
- 3Application Interfaces
- 3.1.General Description
- 3.2.Pin Assignment
- 3.3.Pin Description
- 3.4.Power Supply
- 3.5.Turn on and off Scenarios
- 3.6.VRTC Interface
- 3.7.Power Output
- 3.8.Battery Charge and Management
- 3.9.USB Interface
- 3.10.UART Interfaces
- 3.11.(U)SIM Interfaces
- 3.12.SD Card Interface
- 3.13.GPIO Interfaces
- 3.14.I2C Interfaces
- 3.15.ADC Interfaces
- 3.16.Motor Drive Interface
- 3.17.LCM Interface
- 3.18.Touch Panel Interface
- 3.19.Camera Interfaces
- 3.20.Sensor Interfaces
- 3.21.Audio Interfaces
- 3.22.Emergency Download Interface
- 4Wi-Fi and BT
- 5GNSS
- 6Antenna Interface
- 7Electrical, Reliability and Radio Characteristics
- 8Mechanical Dimensions
- 9Storage, Manufacturing and Packaging
- 10Appendix A References
- 11Appendix B GPRS Coding Schemes
- 12Appendix C GPRS Multi-slot Classes
- 13Appendix D EDGE Modulation and Coding Schemes
Smart LTE Module Series
SC20 Hardware Design
SC20_Hardware_Design Confidential / Released
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Figure 20: Reference Circuit for Motor Connection
When the motor stops, the redundant electricity can be discharged from the circuit loop formed by diodes,
thus avoiding component damages.
3.17. LCM Interface
SC20 module provides an LCM interface meeting MIPI DSI specification. The interface supports high
speed differential data transmission, with up to four lanes and a transmission rate up to 1.5Gbps per lane.
It supports maximally 720P resolution displays.
Table 20: Pin Definition of LCM Interface
Pin Name
Pin No
I/O
Description
Comment
LDO6_1V8
125
PO
1.8V output power supply for
LCM logic circuit and DSI
1.8V normal voltage.
Vnorm=1.8V
I
O
max=100mA
LDO17_2V85
129
PO
2.85V output power supply for
LCM analog circuits
2.85V normal voltage.
Vnorm=2.85V
I
O
max=300mA
PWM
29
DO
Adjust the backlight brightness.
PWM control signal.
LCD_RST
49
DO
LCD reset signal
Active low
LCD_TE
50
DI
LCD tearing effect signal